It's the scene at Hardhome when the Night King raises his arms and brings dead people back to life. The photoshop would be putting Scott Frost's head onto the Night King's body. Then when you see the dead people's eyes open, have that be both Herbie Husker and Lil Red coming back to life. So it ends up being a "frosty" Scott Frost basically resurrecting Nebraska football.
I don't know if anyone here has the skills to do that. It would probably take a while, so I'm not expecting anything. I think something like that would be fun though.